The police received a mysterious letter today. The pure black envelope had bright red fonts: Attached to the Criminal Investigation Brigade of Xi City Public Security Bureau. On the black letter paper, there is a big "X" symbol. Is anyone still playing pranks on the police these days? "X, should it be pronounced as X or as cross?" Nan Huai, the newly promoted detective, muttered this symbol.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
